Zero Tolerance 0640BLK Limited Edition Black 20CV Carbon Fiber Titanium Folder

Model: ZT-0640BLK
Manufacturer: Zero Tolerance
Retail: $350.00
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The 0640 is a collaborative design between Zero Tolerance and Emerson knives, reviving the retired Viper design with upgrades for the modern age. The streamlined design of the 0640 provides low-drag carry and high-speed deployment while being robust for heavy use. This limited edition Factory Special Series run comes with a black coated CPM-20CV blade with matching titanium frame and dark black carbon fiber overlays. The stealthiest 0640 yet!

Brand new directly from Zero Tolerance knives.

Blade: The low profile black coated CPM 20CV blade rides smooth on durable phosphor bronze washers with ambidextrous deployment via the Emerson-style thumb disk. A high saber grind and clip point swedge deliver a durable blade that slices and pierces with authority.

Handle: Black carbon fiber overlays add style to the coffin-shaped handle supported by solid titanium slabs for a stout, dependable handle. An integral frame lock comes equipped with a steel lock face insert for smooth, reliable operation and rock solid lockup. Chamfered edges pair with strategic jimping for an ergonomic and comfortable handle with a neutral for added versatility.

Carries via a reversible stainless steel tip-up carry pocket clip.

CPM-20CV: CPM-20CV (analog to M390 and CTS-204P) is a premium powder metallurgy (PM) stainless steel with high level edge retention and corrosion resistance. Relatively easy to sharpen, the coarse microstructure gives this steel lower toughness.


Overall Length 8.50"
Blade Length 3.75"
Sharpened Length 3.70"
Blade Thickness 0.15"
Blade Material CPM-20CV
Blade Type Stainless
Opening Mechanism Manual
Lock Frame Lock
Closed Length 4.75"
Handle Thickness 0.55"
Handle Material Carbon Fiber, Titanium
Clip Stainless Steel
Clip Position Tip-Up
Weight 4.50 oz.
Country of Manufacture United States